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Finding the Fourth Proportional to 274,905.84, 379,369.80 and 154,048.08

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Solution

The fourth proportional to 274,905.84, 379,369.80 and 154,048.08 is: 212,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,905.84 : 379,369.80 = 154,048.08 : x
  2. Step 2: Convert to fraction form
    274,905.84/379,369.80 = 154,048.08/x
  3. Step 3: Cross multiply
    274,905.84x = 379,369.80 × 154,048.08
  4. Step 4: Simplify right side
    274,905.84x = 58,441,189,299.98
  5. Step 5: Solve for x
    x = 58,441,189,299.98/274,905.84
  6. Step 6: Final answer
    x = 212,586.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.